No, you can't genetically modify your own species, unles the entire race agreed to it.
I think they prefer their current body too much for that. If they have difficulty with focus or something, they use machinery in their eye sockets and stuff, remember?
The main way they've midified themselves is their feet, presumably each leg spits into two sections. Since this doesn't support them well on the ground, they've stitched their feet up to make a stub, which supports their weight much better.
Any modification is individual, via stitching etc.
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